Latin Mass at the National Shrine in April

First such Mass at the shrine in nearly 45 years

If you haven't yet settled on a way to mark the fifth anniversary of the pontificate Benedict XVI, and if you're in the Washington, D.C., area, you may want to check this out.

The Paulus Institute, whose raison d'être is "for the propagation of sacred liturgy," announced today "the fifth anniversary of inauguration of Pope Benedict XVI will be commemorated in the Great Upper Church of the Basilica of the National Shrine of the Immaculate Conception, Washington D.C. by a Pontifical Solemn High Mass in the 'Extraordinary form' -- commonly known as the 'Traditional Latin Mass' or the 'Tridentine Mass.' "

The Mass will be celebrated by Colombian Cardinal Dario Castrillon Hoyos, the president emeritus of the Vatican's Pontifical Commission Ecclesia Dei.

The date: Saturday, April 24, at 1 p.m.

"We are inviting all Catholics to this Mass for the unity of the entire Catholic community, including those unfamiliar with it and particularly young adults and families," says Paulus Institute president Paul King in a news releasing announcing the Pontifical Latin Mass.

Watch the preparations for the Mass as they unfold [and here's where 12th century Catholicism connects with 21st century target audience] on Twitter and Facebook.